CN202095089U - Digital microphone - Google Patents
Digital microphone Download PDFInfo
- Publication number
- CN202095089U CN202095089U CN 201020591929 CN201020591929U CN202095089U CN 202095089 U CN202095089 U CN 202095089U CN 201020591929 CN201020591929 CN 201020591929 CN 201020591929 U CN201020591929 U CN 201020591929U CN 202095089 U CN202095089 U CN 202095089U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- digital microphone
- connector
- connecting portion
- pole plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The utility model provides a digital microphone, which comprises a back polar plate, a back polar seat, a connector and a circuit board, wherein the back polar seat is in proximity to the back polar plate and accommodates the back polar plate, the connector is arranged between the back polar plate and the circuit board and is electrically connected with the back polar plate and the circuit board, the back polar seat comprises oppositely arranged cooperation portions, and the cooperation portions accommodate the connector. Compared with a general connecting ring, the connector in the microphone is smaller in volume, less in occupation space and lower in manufacturing cost.
Description
Technical field
The utility model relates to a kind of digital microphone, is meant a kind of digital microphone especially.
Background technology
Along with the development of wireless telecommunications, Global Mobile Phone Users is more and more, and the user is also more and more higher to the requirement of mobile phone simultaneously, and it is inevitable to require to provide high-quality communication effect to become.The digital microphone of mobile phone is as the voice pick device of mobile phone, and the quality of its design directly has influence on the communication effect quality of mobile phone.Digital microphone at present commonly used mainly contains capacitance digital microphone and MEMS (micro electro mechanical system) (Micro-Electro-Mechanical-Systems, MEMS) digital microphone, and the capacitance digital microphone is widely used because of with low cost.
As shown in Figure 1, be a kind of capacitance digital microphone 1 relevant with the utility model.This digital microphone 1 comprises lid 11, diaphragm group 12, pad 13, back pole plate 14, back-pole base 15, connecting ring 16 and circuit board 17.Described lid 11 is accommodated described diaphragm group 12, pad 13, back pole plate 14, back-pole base 15, connecting ring 16 in it.
Described back pole plate 14 is separated by described pad 13 with described diaphragm group 12 and is oppositely arranged, and described back-pole base 15 is accommodated described back pole plate 14 and described connecting ring 16.Described connecting ring 16 electrically connects with described back pole plate 14 and circuit board 17, and described lid 11 electrically connects with described diaphragm group 12.Described lid 11 is provided with continuant orifice 110 to receive outside sound source, and described diaphragm group 12 electrically connects by described lid 11 and described circuit board 17.Described back pole plate 14 electrically connects with described circuit board 17 and pass through described connecting ring 16 by insulation between described back-pole base 15 and described diaphragm group 12 and the described lid 11.
By the electrical connection between above-mentioned each element, can realize capacity effect between described back pole plate 14 and the described diaphragm group 12.After outside sound source enters described lid 11 by described continuant orifice 110, described diaphragm group 12 is vibrated and is caused the distance between itself and the described back pole plate 14 to change, and then cause the capacitance between the two to change, cause that electric current changes, thereby sound wave is converted into the signal of telecommunication.
Generally, the inner surface of described connecting ring 16 and top surface need be electroplated the layer of metal film with the electric connection of realization while with described back pole plate 14 and described circuit board 17.Yet described connecting ring 16 forms complex process, cost height because of injection moulding on the one hand; On the other hand, described connecting ring 16 volumes are big, need take more space during use, do not conform with nowadays more and more littler to digital microphone volume requirement trend.
In addition, because described connecting ring 16 is provided with ringwise, this just makes circuit Butut on the described circuit board 17 to be provided with curvedly to cause described connecting ring 16 bigger with described circuit board 17 contact-making surfaces with corresponding with described connecting ring 16, be unfavorable for reducing parasitic capacitance.
This shows, be necessary to provide a kind of digital microphone that can effectively overcome above-mentioned deficiency.
The utility model content
The digital microphone that the utility model aims to provide and a kind ofly occupies little space, cost of manufacture is low.
In order to solve the problems of the technologies described above, the utility model provides a kind of digital microphone, it comprises back pole plate, back-pole base, connector and circuit board, described back-pole base and described back pole plate in abutting connection with and accommodate described back pole plate in it, described connector is arranged between described back pole plate and the described circuit board, and electrically connect with described back pole plate and described circuit board, described back-pole base comprises the auxiliary section that is oppositely arranged, described connector is accommodated in it in described auxiliary section.
As the further improvement of above-mentioned digital microphone, described connector comprises first connecting portion and second connecting portion, and described first connecting portion and described circuit board electrically connect, and described second connecting portion and described back pole plate electrically connect.
As the further improvement of above-mentioned digital microphone, first connecting portion of described connector is vertical mutually with second connecting portion.
As the further improvement of above-mentioned digital microphone, the cross section of described connector is L-shaped.
As the further improvement of above-mentioned digital microphone, described auxiliary section is convexly set in described back-pole base madial wall.
As the further improvement of above-mentioned digital microphone, described auxiliary section is equipped with containing hole, and described connector is contained in the described containing hole.
As the further improvement of above-mentioned digital microphone, described connector and described auxiliary section are one-body molded.
As the further improvement of above-mentioned digital microphone, described circuit board is provided with the corresponding conducting strip of shape of first connecting portion of shape and described connector, and first connecting portion of described connector is arranged at described conducting strip and electrically connects with described circuit board.
As the further improvement of above-mentioned digital microphone, described conducting strip is arranged at the relative both sides of described circuit board.
As the further improvement of above-mentioned digital microphone, described conducting strip is provided with along the long limit of described circuit board.
Connector described in the digital microphone of the present utility model is compared with general connecting ring, have volume little, occupy little space and characteristics that cost of manufacture is low.
Description of drawings
Fig. 1 is a kind of perspective exploded view of the capacitance digital microphone relevant with the utility model.
Fig. 2 is the perspective exploded view of the utility model digital microphone one preferred embodiment.
Fig. 3 is a digital microphone shown in Figure 2 perspective exploded view in opposite direction.
Fig. 4 is the solid combination schematic diagram of digital microphone shown in Figure 2.
Fig. 5 is the side cross-sectional schematic of digital microphone shown in Figure 4.
Embodiment
Describe below in conjunction with the structure of accompanying drawing the utility model digital microphone.
See also Fig. 2 to Fig. 5, described digital microphone 100 comprises lid 10, diaphragm group 20, pad 30, back pole plate 40, back-pole base 50, connector 60 and circuit board 70.Described diaphragm group 20, described pad 30, described back pole plate 40, described back-pole base 50, described connector 60 and described circuit board 70 are contained in the described lid 10.
Described lid 10 is provided with continuant orifice 12, to receive outside sound source.Described lid 10 inwalls are coated with conductive layer, so that described diaphragm group 20 is by the conductive layer and 70 electric connections of described circuit board of described lid 10 inwalls.The encapsulation of lid described in the present embodiment 10 is shaped as a rectangle.
Described diaphragm group 20 comprises diaphragm 22 and the diaphragm ring 24 that supports diaphragm 22.Described diaphragm group 20 electrically connects with described lid 10.
The lamellar body that described pad 30 is made for insulating material, described diaphragm group 20 and described back pole plate 40 are used for insulating.
Described back pole plate 40 and described lid 10 and 20 insulation of described diaphragm group, and by described connector 60 and described circuit board 70 electric connections.
Described back-pole base 50 is used for supporting described back pole plate 40 and carries described connector 60.Described back-pole base 50 tops are provided with annular accepting groove 52, to carry described back pole plate 40 in described back-pole base 50.Described back-pole base 50 madial walls convex with the auxiliary section 54 that combines with described connector 60 relatively, be equipped with containing hole 56 in the middle of each auxiliary section 54, the size and the shape of described containing hole 56 sizes and shape and described connector 60 are complementary, so that described connector 60 can be contained in described containing hole 56.The 54 rectangular blocks of auxiliary section described in the present embodiment, i.e. step-like structure, the cross section of described containing hole 56 is rectangular.
Described connector 60 comprises the lamellar body that a pair of cross section is L-shaped, comprise first connecting portion 62 and second connecting portion 64, described first connecting portion 62 and the 64 mutual vertical settings of described second connecting portion, as the conducting terminal between described back pole plate 40 and the described circuit board 70, its material by good conductivity is made.Described connector 60 is housed in the containing hole 56 of auxiliary section 54 of described back-pole base 50.Described first connecting portion 62 is used for contacting and electrically connecting with described circuit board 70, and described second connecting portion 64 is used for contacting and electrically connecting with described back pole plate 40, thereby realizes the electric connection between described back pole plate 40 and the described circuit board 70.
Described circuit board 70 is realized signal of telecommunication output, which is provided with control circuit unit 72, includes electronic components such as analog converter, electric capacity in the described control circuit unit 72.Described circuit board 70 is provided with the conducting strip 74 that the shape with first connecting portion 62 of described connector 60 is complementary, and described conducting strip 74 is distributed with electric wire and realizes electrically connecting with described circuit board 70 so that be arranged at first connecting portion 62 of described conducting strip 74.Described conducting strip 74 is provided with along the long limit of described circuit board 70, and need not described circuit board 70 peripheries of winding, and first connecting portion 62 of described connector 60 is less with described conducting strip 74 contact-making surfaces.So, first connecting portion 62 of described connector 60 and the contact-making surface between the described circuit board 70 obviously reduce, and help reducing parasitic capacitance, reduce noise.
By the electrical connection between above-mentioned each element, can realize capacity effect between described back pole plate 40 and the described diaphragm group 20.After outside sound source entered described lid 10, described diaphragm group 20 was vibrated and is caused the distance between itself and the described back pole plate 40 to change, and then causes the capacitance between the two to change, and causes that electric current changes, thereby sound wave is converted into the signal of telecommunication.
Connector described in the utility model 60 is that branch is arranged with the auxiliary section 54 of described back-pole base 50, yet understandable, described connector 60 also can be one-body molded with the auxiliary section 54 of described back-pole base 50.In addition, described connector 60 also can be fixed in the containing hole 56 of described auxiliary section 54 by interference fit.
In the described digital microphone 100 of the present utility model, because described connector 60 replaces general connecting ring, described connector 60 need not to form by Shooting Technique, cost is low, and the contact-making surface between described connecting portion 60 and the described circuit board 70 is little, volume is little, occupies little space, and also makes the lighter overall weight of described digital microphone 100 simultaneously.
Only be preferred case study on implementation of the present utility model below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. digital microphone, it comprises back pole plate, back-pole base, connector and circuit board, described back-pole base and described back pole plate in abutting connection with and accommodate described back pole plate in it, described connector is arranged between described back pole plate and the described circuit board, and electrically connect with described back pole plate and described circuit board, it is characterized in that: described back-pole base comprises the auxiliary section that is oppositely arranged, and described connector is accommodated in it in described auxiliary section.
2. digital microphone according to claim 1 is characterized in that: described connector comprises first connecting portion and second connecting portion, and described first connecting portion and described circuit board electrically connect, and described second connecting portion and described back pole plate electrically connect.
3. digital microphone according to claim 2 is characterized in that: first connecting portion of described connector is vertical mutually with second connecting portion.
4. digital microphone according to claim 3 is characterized in that: the cross section of described connector is L-shaped.
5. digital microphone according to claim 1 is characterized in that: described auxiliary section is convexly set in described back-pole base madial wall.
6. digital microphone according to claim 5 is characterized in that: described auxiliary section is equipped with containing hole, and described connector is contained in the described containing hole.
7. digital microphone according to claim 5 is characterized in that: described connector and described auxiliary section are one-body molded.
8. digital microphone according to claim 2, it is characterized in that: described circuit board is provided with the corresponding conducting strip of shape of first connecting portion of shape and described connector, and first connecting portion of described connector is arranged at described conducting strip and electrically connects with described circuit board.
9. digital microphone according to claim 8 is characterized in that: described conducting strip is arranged at the relative both sides of described circuit board.
10. digital microphone according to claim 9 is characterized in that: described conducting strip is provided with along the long limit of described circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020591929 CN202095089U (en) | 2009-12-21 | 2010-11-04 | Digital microphone |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920261782.9 | 2009-12-21 | ||
| CN200920261782 | 2009-12-21 | ||
| CN 201020591929 CN202095089U (en) | 2009-12-21 | 2010-11-04 | Digital microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202095089U true CN202095089U (en) | 2011-12-28 |
Family
ID=45370128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020591929 Expired - Lifetime CN202095089U (en) | 2009-12-21 | 2010-11-04 | Digital microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202095089U (en) |
-
2010
- 2010-11-04 CN CN 201020591929 patent/CN202095089U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |